* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background: linear-gradient(rgba(143, 217, 116, 0.5),rgba(78, 207, 9, 0.5), rgba(143, 217, 116, 0.5));
    /* background-repeat: no-repeat; */
}

                                                    /* All page header */

header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #4CA456;
    z-index: 99;
}

                /* Logo style */
.logo{
    font-size: 2em;
    color: #ececec;
    user-select: none;
    font-family: 'Times New Roman', Times, serif;
}
                /* navigation links */
.navigation a{
    position: relative;
    font-size: 1.1em;
    color: #ececec;
    text-decoration: none;
    font-weight: 500;
    margin-left: 40px;
}
.navigation a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 3px;
    background: #fff;
    border-radius: 5px;
    transform-origin: right;
    transform: scaleX(0);
    transition: transform .5s;
}
.navigation a:hover::after {
    transform-origin: left;
    transform: scaleX(1);
}
                /* intro div */
.intro{
    width: 750px;
    height: 450px;
    border: 2px solid #7AC968;
    border-radius: 20px;
    position: absolute;
    top: 130px;
    right: 25px;
    background-color: rgba(76, 164, 86, 0.8);
    box-shadow: 10px 10px 5px #8FD974;
}
.intro p{
    position: relative;
    top: 15px;
    padding: 10px;
    font-size: 1.2rem;
    line-height: 35px;
    color: #151715;
}
.F_letter{
    font-size: 2.5rem;
    font-family: 'Times New Roman';
}
.save_img img{
    height: 600px;
    width: 500px;
    position: absolute;
    top: 800px;
    right: 10px;
    border-radius: 20px;
    opacity: 0.8;
}

                                                    /* home page issues class */

.issues{
    position: relative;
    left: -200px;
    top: 650px;
}
.issues h2{
    width: 600px;
    font-size: 2.5rem;
    padding: -10px;
    padding-left: 20px;
}
.issues h3{
    color: black;
    padding: 25px 50px;
    font-size: 1.5rem;
}
.issues p{
    color: #394141;
    padding: 10px 100px;
    width: 1000px;
    font-size: 1.3rem;
}
hr.h_topic{
    border: 4px solid rgb(10, 168, 15);
    border-radius: 5px;
    width: 100%;
}
hr.air{
    border: 4px solid rgb(102, 234, 186);
    border-radius: 5px;
    width: 600px;
}
hr.water{
    border: 4px solid rgb(7, 119, 188);
    border-radius: 5px;
    width: 500px;

}
hr.soil{
    border: 4px solid rgb(187, 91, 1);
    border-radius: 5px;
    width: 500px;

}
hr.other{
    border: 4px solid rgb(0, 0, 0);
    border-radius: 5px;
    width: 600px;
}

                                                /* home page slide show */

.slide {
    display: flex;
    height: 100vh;
    position: absolute;
    top: 150px;
    left: 20px;
}

.slide .slidebody {
    width: 700px;
    height: 400px;
    border-radius: 40px;
    overflow: hidden;
}

.slide .slidebody .slideimg {
    display: grid;
    grid-template-columns: repeat(3, 100%);
    animation: slideanim 15s ease-in-out infinite alternate;
}

@keyframes slideanim {
    0% {
        transform: translateX(0%);
    }
    15% {
        transform: translateX(0%);
    }
    30% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(-100%);
    }
    60% {
        transform: translateX(-200%);
    }
    80% {
        transform: translateX(-200%);
    }
    95% {
        transform: translateX(-200%);
    }
    100% {
        transform: translateX(-200%);
    }
}

.slide .slidebody .slideimg img {
    width: 100%;
}



                                            /* footer */


footer{
    height: 25vh;
    width: 100%;
    position: absolute;
    margin-top: 2400px;
    border-radius: 30px 30px 0 0;
    background-color: rgb(91, 180, 98);
}

footer .topic{
    font-size: 28px;
    color: #fff;
    margin-top: 20px;
}

footer p{
    color: #000000;
    position: relative;
    width: 500px;
    padding: 5px;
    left: 50px;
}
footer a {
    text-decoration: none;
}
footer .link{
    position: relative;
    left: 560px;
    top: -60px;
    color: rgb(0, 0, 0);
    padding: 20px;
    
}